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/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* Watchdog driver */
/*
* TODO(crosbug.com/p/24107): Use independent timer for warning before watchdog
* timer expires.
*/
#include "hooks.h"
#include "registers.h"
#include "watchdog.h"
void watchdog_reload(void)
{
MEC1322_WDG_KICK = 1;
}
DECLARE_HOOK(HOOK_TICK, watchdog_reload, HOOK_PRIO_DEFAULT);
int watchdog_init(void)
{
/* Set timeout. It takes 1007us to decrement WDG_CNT by 1. */
MEC1322_WDG_LOAD = WATCHDOG_PERIOD_MS * 1000 / 1007;
/* Start watchdog */
MEC1322_WDG_CTL |= 1;
return EC_SUCCESS;
}
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